Pygmy Possum Project

Breeding Crash

The estimated breeding rate as shown by the number of juveniles directly observed crashed in the severe drought/heat wave year of 2018 and has only recovered in 0ne of the three sites after several months of rainfall sufficiency end-2018 to start of 2019 (followed by two very dry months and one wet month). Recruitment of new members to the population to replace the high EPP death rate due to predation and other causes would be insufficient to prevent a population decline as the cohorts age.

Number of Juveniles observed in nest boxes at population change monitoring sites by year and location of monitoring site:

Year Ku-ring-gai Wildflower Garden CUS Warrimoo Oval Bushland CUS Pony Club Mallee Heath Total
2017 4 2 4 10
2018 0 1 0 1
2019 0 0 3 3


On the 25 October 2015, I organised a Pygmy Possum Nest Box Working Bee to reorganise the 6 nest boxes already deployed to 2 known EPP-occurrence areas to act as population change monitoring sites::

  • Ku-ring-gai Wildflower Garden - 3 nest boxes were deployed in a longitudinal transect of a core CUS area
  • Warrimoo Oval bushland - 3 nest boxes were deployed in a vertical transect across the edge of the CUS.